summaryrefslogtreecommitdiffstats
path: root/net/batman-adv/routing.c
AgeCommit message (Collapse)Author
2011-05-08batman-adv: remove duplicate code from function is_bidirectional_neigh()Daniele Furlan
In function is_bidirectional_neigh the code that find out the one hop neighbor is duplicated. Signed-off-by: Daniele Furlan <daniele.furlan@gmail.com> Signed-off-by: Sven Eckelmann <sven@narfation.org>
2011-05-08batman-adv: rename everything from *hna* into *tt* (translation table)Antonio Quartulli
To be coherent, all the functions/variables/constants have been renamed to the TranslationTable style Signed-off-by: Antonio Quartulli <ordex@autistici.org> Signed-off-by: Sven Eckelmann <sven@narfation.org>
2011-05-08batman-adv: Fix refcount imbalance in find_routerMarek Lindner
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> Signed-off-by: Sven Eckelmann <sven@narfation.org>
2011-05-01batman-adv: Make bat_priv->primary_if an rcu protected pointerMarek Lindner
The rcu protected macros rcu_dereference() and rcu_assign_pointer() for the bat_priv->primary_if need to be used, as well as spin/rcu locking. Otherwise we might end up using a primary_if pointer pointing to already freed memory. Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> Signed-off-by: Sven Eckelmann <sven@narfation.org>
2011-05-01batman-adv: orig_hash_find() manages rcu_lock/unlock internallyAntonio Quartulli
orig_hash_find() manages rcu_lock/unlock internally and doesn't need to be surrounded by rcu_read_lock() / rcu_read_unlock() anymore Signed-off-by: Antonio Quartulli <ordex@autistici.org> Acked-by: Marek Lindner <lindner_marek@yahoo.de> Signed-off-by: Sven Eckelmann <sven@narfation.org>
2011-04-17batman-adv: Protect global TQ window with a spinlockLinus Lüssing
Signed-off-by: Linus Lüssing <linus.luessing@web.de> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> Signed-off-by: Sven Eckelmann <sven@narfation.org>
2011-04-17batman-adv: Make orig_node->router an rcu protected pointerLinus Lüssing
The rcu protected macros rcu_dereference() and rcu_assign_pointer() for the orig_node->router need to be used, as well as spin/rcu locking. Otherwise we might end up using a router pointer pointing to already freed memory. Therefore this commit introduces the safe getter method orig_node_get_router(). Signed-off-by: Linus Lüssing <linus.luessing@web.de> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> Signed-off-by: Sven Eckelmann <sven@narfation.org>
2011-04-17batman-adv: Move bonding / iface alternating router search to own functionsLinus Lüssing
This decreases the size of find_router() by outsourcing the router search for the bonding and interface alternating modes to their own sub functions. This shall make it easier to keep track of the correct refcounting later. Signed-off-by: Linus Lüssing <linus.luessing@web.de> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> Signed-off-by: Sven Eckelmann <sven@narfation.org>
2011-03-05batman-adv: Remove unused hdr_size variable in route_unicast_packet()Linus Lüssing
Signed-off-by: Linus Lüssing <linus.luessing@ascom.ch> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
2011-03-05batman-adv: rename batman_if struct to hard_ifaceMarek Lindner
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
2011-03-05batman-adv: rename global if_list to hardif_listMarek Lindner
Batman-adv works with "hard interfaces" as well as "soft interfaces". The new name should better make clear which kind of interfaces this list stores. Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
2011-03-05batman-adv: remove orig_hash spinlockMarek Lindner
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
2011-03-05batman-adv: increase refcount in create_neighbor to be consistentMarek Lindner
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
2011-03-05batman-adv: Correct rcu refcounting for orig_nodeMarek Lindner
It might be possible that 2 threads access the same data in the same rcu grace period. The first thread calls call_rcu() to decrement the refcount and free the data while the second thread increases the refcount to use the data. To avoid this race condition all refcount operations have to be atomic. Reported-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
2011-03-05batman-adv: remove extra layer between hash and hash element - hash bucketMarek Lindner
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
2011-03-05batman-adv: separate ethernet comparing calls from hash functionsMarek Lindner
Note: The function compare_ether_addr() provided by the Linux kernel requires aligned memory. Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
2011-03-05batman-adv: make broadcast seqno operations atomicMarek Lindner
Batman-adv could receive several payload broadcasts at the same time that would trigger access to the broadcast seqno sliding window to determine whether this is a new broadcast or not. If these incoming broadcasts are accessing the sliding window simultaneously it could be left in an inconsistent state. Therefore it is necessary to make sure this access is atomic. Reported-by: Linus Lüssing <linus.luessing@web.de> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
2011-03-05batman-adv: protect bit operations to count OGMs with spinlockMarek Lindner
Reported-by: Linus Lüssing <linus.luessing@saxnet.de> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
2011-03-05batman-adv: Correct rcu refcounting for neigh_nodeMarek Lindner
It might be possible that 2 threads access the same data in the same rcu grace period. The first thread calls call_rcu() to decrement the refcount and free the data while the second thread increases the refcount to use the data. To avoid this race condition all refcount operations have to be atomic. Reported-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
2011-03-05batman-adv: protect bonding with rcu locksSimon Wunderlich
bonding / alternating candidates need to be secured by rcu locks as well. This patch therefore converts the bonding list from a plain pointer list to a rcu securable lists and references the bonding candidates. Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
2011-03-05batman-adv: protect ogm counter arrays with spinlockMarek Lindner
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
2011-03-05batman-adv: protect originator nodes with reference countersMarek Lindner
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
2011-03-05batman-adv: protect each hash row with rcu locksMarek Lindner
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
2011-03-05batman-adv: protect neigh_nodes used outside of rcu_locks with refcountingMarek Lindner
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
2011-03-05batman-adv: protect neighbor list with rcu locksMarek Lindner
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
2011-03-05batman-adv: convert neighbor list to hlistMarek Lindner
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
2011-03-05batman-adv: protect neighbor nodes with reference countersMarek Lindner
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
2011-02-11batman-adv: Remove duplicate types.h inclusionsLinus Lüssing
types.h is included by main.h, which is included at the beginning of any other c-file anyway. Therefore this commit removes those duplicate inclussions. Signed-off-by: Linus Lüssing <linus.luessing@ascom.ch> Signed-off-by: Sven Eckelmann <sven@narfation.org>
2011-01-31batman-adv: Update copyright yearsSven Eckelmann
Signed-off-by: Sven Eckelmann <sven@narfation.org>
2011-01-31batman-adv: Remove unused variablesSven Eckelmann
Signed-off-by: Sven Eckelmann <sven@narfation.org>
2011-01-31batman-adv: remove unused parametersSimon Wunderlich
Some function parameters are obsolete now and can be removed. Reported-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de> Signed-off-by: Sven Eckelmann <sven@narfation.org>
2011-01-31batman-adv: Calculate correct size for merged packetsSven Eckelmann
The routing algorithm must be able to decide if a fragment can be merged with the missing part and still be passed to a forwarding interface. The fragments can only differ by one byte in case that the original payload had an uneven length. In that situation the sender has to inform all possible receivers that the tail is one byte longer using the flag UNI_FRAG_LARGETAIL. The combination of UNI_FRAG_LARGETAIL and UNI_FRAG_HEAD flag makes it possible to calculate the correct length for even and uneven sized payloads. The original formula missed to add the unicast header at all and forgot to remove the fragment header of the second fragment. This made the results highly unreliable and only useful for machines with large differences between the configured MTUs. Reported-by: Russell Senior <russell@personaltelco.net> Reported-by: Marek Lindner <lindner_marek@yahoo.de> Signed-off-by: Sven Eckelmann <sven@narfation.org>
2010-12-16net: Add batman-adv meshing protocolSven Eckelmann
B.A.T.M.A.N. (better approach to mobile ad-hoc networking) is a routing protocol for multi-hop ad-hoc mesh networks. The networks may be wired or wireless. See http://www.open-mesh.org/ for more information and user space tools. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-28 06:54:38 +0000